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@uiten gta/tra strut' @fge MARTIN Maron/Ln, on GRAND RAPrDsMicHIGAN'.

Letters Patent No. 78,677, dated June v9,

Inrnovsn ntomas ron eaoovlne AND sWAeINe SHEET METAL.

fro ALL WHOM- I r MAY CONGERN:

Be it known that I, MARTIN METCALF, ofthe city of Grand Rapids, in the county of Kent, and State of Michigan, have invented certain new and useful' Improvements in Machines forGrooving and SwagingSheet Metals; vand I do hereby'declare that the following is a full andexactideseription of the same, reference being had to the accompanying drawings, and to the letters of reference marked thereon, in which- Figure 1 is a prole view of th'elrnachinawithA alength of piperepresented passing into the same.

Figure 2 is a front view of them'achine, showing the'loonstrnetion and operation of the rollers for making the seam.

The nature of my invention consists in providing'a sheet-metal grooving and swaging-machine with suitable grooving, swaging, and setting-down rollers, and arranged in such a manner that the 'plate to be grooved or cylinder to be locked andfswaged, is drawn into th'e machine hetweentwo rollers, beinggrooved'as it passes in, whereit is swag-ed or beaded, and its small end swaged in, so as to readily enter another cylinder or pipa-and inretnrning out of the machine the seam is closed down perfectly tight and smooth, so that a perfectly-finished length of pipe is delivered from the machine at one operation of the same. i

To enable 'others skilled in the art to. construct` and use my invention, I will now proceed to describe its construction and operation.'l

In the drawings, A A, fig. 1, represent the main frame of the machine.

C C C C, fig. 2, represental small frame, or two clamps, which carry til-e grooveroller 1, the setting-down roller 2, with thecog-wheels'l 2 3. The bolt'ol fasten's these clampstogether or in place; one on each side of the front end of upper framelbar A, passing through' the latter, 'and forming a centre, on which thesmall frame rocksto and fro by the movements of the handled right-hand clamp, ashereafter described.

I b represents a small lever, with a spring under its upper endand pin in its opposite ends, the latter passing through a hole made`in the clamp C, so that the pin may enter the slotfinthe frame A A, iig. 1.

A spring, y, fig. 1,A shown bythe dotted line, fastened to the frame A, and acting on the centre-bolt'd, figs. l and 2, serves to hold the small frame and wheelsvup, while the thumb-screw h, acting on the box and shaft d, fig. 1, shown by the dotted lnes,regulates the distance 'between the centre'of bolt d, iig. 2, and wheel 4 in lower part of frame A A, also shown in iig. 1.

A A crank, c, made fast to the loose cog-whee1 3, acts on the cog-wheels 1 and 2', and operates the wheel 4, by means of the friction alternately of .the groo'vem'heel and setting-down wheel, attached to them, as shown in sg. 2.

B B, fig. 1, represent the ordinary ymale and female swagefrollers, with suitable shafts, crank, and wheels to operate them, the shafts passing through the centre of the rear end of the machine, with spring between them, as 4shown by the dotted lines. AThese swage-rollers are bevelletl on their extreme rear ends, the upper one made larger and the llower one` smaller, for the purposeof contracting the small end of a. pipe. 'These rollers are operated bythe crank, I, made fast tothe upper shaft. The eccentric-lever D, fng. 1,orces them together, while the springidotted-lines) lifts them apart when the lever is np, as represented.-

A perpendicular vpassage-way is made through-the lower part of i'rame,'immedately under the swage=rollers Il B, iig. 1, for any scales that may fall from the'metalbeing swaged, as shownV by' the dotted lines, rlhis machine is .made fast to the Workmans bench' by means of'the bolt E attached to the rear under side of the frame A andhandnut 'ml I Y I In' operating this machine, let suppose we wish to make a. length of pipe complete. aving provided ourselves with a length of' sante, duly prepared by irst having been formed-,and its locks turned, the operator, standing at the right-hand front end of the machine, in the'proper position to operate the crank c with the right hand, while inith'e left he. holds the pipe, with its smaller lend at the entrance between V*the rollers 1 and 4, with the levers in the positionrrepresented in iig. 1. The groove-roller will now' be in its proper place o n the convex K roller 4 in the lower arm of frame A. With the locks together on the entering end, at least, the operator will turn the crank in the direction shown by the arrow, iig. 1, which'will draw the seam through between the rollers and on tothe frame-arm carrying the convex roller 4, as shown by the dotted lines, at'the same time forming avery perfect lock throughout its whole length.

f Having passed the pipe through between the rollcrson to the arm A ot' large frame, the upper and small end of pipe will have entered between the wage-rollers B LB; v The operator will now'press down theeccentria lever 1),'(either directly with theA hand or by stepping on a treadle,), so as to imprint the pipe, when, by turning the crank I, iigljl, the small end of' the pipe ;wil1'be"bead od and swaged in or contracted so' as to readily enter the large en'd of another pipe, at the some time that itis being enraged-in the orclinarytwary, while the arm A Vholds the pipe in position, so as to insure its being properly done without the aid of the operator other than that of turning the crank. l I

lh'e operator will now release the pipe from the grasp of the rollers-.B B, bythrowing back tne lever D, and

l resume his'former position at thefront. of the machine. Taking hold of the right-hand lever-end of the clamp C C, iig. 1,`witl1 the left hand, a slightpressure on the lever b will .release the pin in its opposite end from the slotf, so that the small frame may be oscillated by throwing the leverback until the side of clamp C C, suitably o shaped for that purpose, strikes a pin, n, in the frame A. The little finger lets loose .now of the small lever and the spring on itsunderside fcrcesthe pin inits opposite end into the slotfof the large frame A,securely I holding the parts in this position.,

By thisrnovement Athe small frame will be oscillated, so as to bring the setting-down or concave wheel'2,

i fig. '2, opposite and attached to the cogwhecl 2', fig. 1,- into the place previously occupied by thegroove-wheel 1, iig. 2, whilethe groovee'wheel willbe carried outward toward the operator, as shown-by the'dottcd lines, fig-1.

' Taking hold ofthe small end of'the pipe withthe Ileft hand on the'left-hand side of the machine, using a little Y force, whilewithithe' right hand thecrankvis turned inl the sam'e direction as before,the seam is very-rapidly and perfectly closedvdown, as the length of pipe is returning out of the machine, thus completing the process of lockingand finishing a joint of pipe or other seam at one operation, without the labor, noise, or ablow of hammer or mallet." f I V The thumb-screw his for adjusting the wheels totany thickness of metal. The crank, c, is placed onthe loose eogwl1ecl- 3, instead of on the cog-wheel v1 or l2,'i,g. 1,for the purpose o placing it up out of theway of flat surfaces, when it is desired to groovc'such, or any sheet-metal cylinders of large diameter.

I Disclaimer.

vIdo notl claimbroad'ly the 'construction ot' .a sheepmetal grooving and setting-down machine with open frame., and the grooving-roller 1, figa 2; vnor do I claim the use 'separately of the roller 1, 2or 4'; but. What I do claim, andd'esire to secure-byLetters Patent of the United States, is

1. The peculiar arrangement and construction of the 'small frame C C 0,' with therollers 1 2,"and the oscil1ating-sliaft d, iig. 2, substantially as and' for the purpose specified.

2. The construction and arrangement of the small frame C CO C, with the-rollers'l 2 and thc shaft d, in

connection with the smalllever b, slot f, andstop-piu n, substantially as and for thevpurp-,ose describerb- 3. The combination of the parts constituting the small frame, with its shaft`d, rollers 1 and 2, c'oglwheels .1 '2 3, lever-12, and thumb-screw hhw'ith'the large frame A A, the stationary roller el, and swage`-ollers B B,

.and eccentric-lever D, substantiallyasand for the purposes specified.

In testimony thatIclaim the foregoing, I have hereunto set my hand and seal, this first day-'of February, A.D.1e6s..` y'

MARTIN METCALF. [1., s-.]'

Witnesses: A D. Gnossr,

O.v ANGELI.. 

